Bishop Anastasios of Rizaion

Bishop Anastasios of Rizaion (1229-) was a Trapezuntine Orthodox Christian bishop. In 1260 he spread the gospel of his religion in the Ilkhanate with Hulegu Khan's blessing, and he converted Chief Munglig of Mosul.

Biography
Anastasios was a preacher in the service of Despot Manuel of Trebizond, and in January 1260 he arrived in Qom to spread the gospel of his foreign religion. He had little regard for the Ilkhanate's old faith of Tengrism, declaring it sinful, and he explained in detail the horrors that the Mongols should suffer in the afterlife unless they mended their ways. Hulegu Khan, the khan of the Ilkhanate, allowed him to continue his missionary work, inviting him to tell the Mongols more about Jesus. In April, Chief Munglig of Mosul converted to Christianity after falling under Anastasios' sway, and Hulegu Khan eventually converted due to Bishop Komitas of Prusa's proselytization.